I had +3 today.
But for priority passport control, only use the one in Hal 2 with is by KLM. In Hal 3 it is guarded by AMS staff.
And choose the left lane cause the flight crew cuts through the right.

EDIT: woops, misread and I think you are talking about Schengen flights. There I have only experience with +1, and they said it was an exception (Schiphol staff).